As long as you have now removed the charger, let the batteries rest for 12 hrs.. You can then measure the voltage and specific gravity with a hydrometer to see if you have a good base reading. You will not get an accurate reading of the batteries' health when first removed from the charger.
Did you measure the actual current or voltage that was input to the batteries? At 2amps, I wouldn't be seeing more than a bubble or two when a battery was almost fully charged. I was advised to charge a new set with 2 amp charge until charger voltage reached 15v. I think that's pretty good advice.
